<form action="__URL__/register" method="POST">
昵称：<input name="username" ><br/>
邮箱：<input name="email" ><br/>
密码：<input name="password" ><br/>
<input type="submit" value="注册">
<input type="hidden" name="HTTP_REFERER" value="{$HTTP_REFERER}">
</form>